Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=javax.faces -DartifactId=jsf-api \
-Dversion=${jsf-api.version} -Dpackaging=jar -Dfile=/path/to/file
Path to dependency:
1) javax.javaee:javaee:hk2-jar:5.0
2) javax.faces:jsf-api:jar:${jsf-api.version}
INFO]
------------------------------------------------------------------------
INFO] For more information, run Maven with the -e switch
INFO]
------------------------------------------------------------------------
INFO] Total time: 1 minute 21 seconds
INFO] Finished at: Mon Jan 28 14:45:00 PST 2008
INFO] Final Memory: 22M/50M
INFO]
------------------------------------------------------------------------